I have the impression that they fit naturally in a mathematical  
package/libraries.

Stef
>
> Thanks for advice. I do not want to write this primitive by now.
> I will use/implement the messages #sum #sumOf: etc... because they  
> are usefull
> to me, even not optimized.
> I am just asking if they are good candidates to be in the base  
> image or not.
> The fact that some could be optimized is just an argument, not an  
> intention.
>
>